Hobart Welding Products OLYMPIC S-64 - Manual (Page 23)

OM-1579 Page 19
6-2. Troubleshooting
Y Disconnect power before troubleshooting
Trouble Remedy
Wire feeds, shielding gas flows, but
electrode wire is not energized. Check interconnecting cord connections. If secure, check cord for continuity and repair or replace
(see Sections 4-3 and 4-4).
Wire feeder is on, meter(s) do not light
up, motor does not run, gas valve and
welding power source contactor do not
pull in. Check and reset CB1 (see Section 5-2).
Electrode wire feeding stops or feeds Check gun trigger connection. See gun Owner’s Manual.
erratically during welding.
Check gun trigger. See gun Owner’s Manual.
Readjust hub tension and drive roll pressure (see Section 4-8).
Change to correct size drive roll (see Table 8-1).
Clean or replace dirty or worn drive roll.
Incorrect size or worn wire guides.
Replace contact tip or liner. See gun Owner’s Manual.
Remove weld spatter or foreign matter from around nozzle opening.
Have Factory Authorized Service Agency check drive motor or motor control board PC1.
Motor runs slowly. Check for correct input voltage.
Wire does not feed until trigger is
pulled, but continues to feed after trig-
ger is released, and trigger hold is not
on. Check for a short between welding gun trigger leads and weld cable. Repair short or replace welding
gun.
Gas valve in feeder is rattling loudly
along with possible erratic or slow wire
feed speed. Check for a short between welding gun trigger leads and weld cable. Repair short or replace welding
gun.
Unit does not switch out of Run-In
Speed. When using this unit with certain older style Miller CV power sources, a weld current sensor
(Part No. 160 963) must be used. Power sources include the Deltaweld prior to Serial No. KG141349
and the Dimension prior to Serial No. KC253517.
Wire feeder power is on, displays light
up, but unit is inoperative. Check welding gun trigger leads for continuity, and repair leads or replace gun.
Schedule A Wire Feed Speed works,
but Schedule B Wire Feed Speed does
not work or is erratic. DIP Switch S1(1) on Option Interface Board PC70 must be in the On position (see Section 4-9).
Wire Feed Speed Meter display does
not match actual wire feed speed. Set DIP Switch S2 on Meter Board PC60 in Inches/Minute mode (see Section 4-9).
Actual arc voltage display on meter is
held after trigger is released, or arc
voltage does not change while welding. Set DIP Switch S2 on Meter Board PC60 in Voltage Monitor mode (see Section 4-9).